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Calculate the mass of Sodium and Zinc in grams in the following equations using ideal gas law.
A piece of sodium metal reacts completely with water as follows: 2Na(s) + 2H2O(l) -----> 2NaOH(aq) + H2(g) The hydrogen gas generated is collected over water at 25.0°C. The volume of the gas is 246 mL measured at 1.00 atm. Calculated the number of grams of sodium used in the reaction. (Vapour pressure of water at 25°C = 0.0313 atm) A sample of Zinc metal reacts completely with an excess of hydrochloride acid: Zn(s) + 2HCl(aq) ----> ZnCl2(aq) + H2(g) The hydrogen gas produced is collected over water at 25°C using an arrangement similar to that shown in Figure 5.15. The volume of the gas in 7.80 L and the pressure is 0.980 atm. Calculate the amount of Zinc metal in grams consumed in the reaction. (Vapor pressure of water at 25°C - 23.8 mmHg)
Some of the best laboratory vacuum systems can pump down to as few as 9.0 multiplied by 109 molecules per cubic meter of gas. Calculate the corresponding pressure, in atmospheres, assuming a temperature of 25°C.
Identify the reaction conditions required for the dehydration of 2,3-dimethylpentan-2-ol to occur. Select all that apply. Select all that apply. Heat Base catalyst Excess Acetone Platinum catalyst Acid catalyst
Find delta H for HCl(g) given H-Cl bond enthalpy = +431 kJ·mol-1;
An unknown carbonyl compound tested positive when mixed with chromic acid solution. It also showed positive results in the iodoform test. Draw the structure of this compund
Identify the best nucleophile for 2-bromo-2-methylpropane and 2-chloro-2-methylpropane in an Sn1 and a Sn2 reaction; acetone, isopropanol
To what energy level was the electron initially excited. (b) What is the net energy absorbed or emitted by the atom (in units of eV) in the overall process
The dissociation of solid silver chloride in water to produce silver ions and chloride ions has an equilibrium constant of 1.8 x10-18. Based on the magnitude of the equilibrium constant, is silver chloride very soluble in water? Explain your answe..
Which corresponds to approximately 2.65 * 104 mol of electrons at the voltage of a fuel cell and calculate how much heat energy is absorbed?
Does increasing the size of an axial substituent always result in higher relative strain energies for the axial conformation
This was a question on my Mastering Chemistry homework. It's from Tro's Cha: Determine the pH of the following two-component solution: 0.260 M NH4NO3 and 0.102 M HCN
explain the following observations: a)an open can of soda loses its "fizz" more quickly at room temperature than in the refrigerator. b) chlorine gas in tap water escapes as the sample warms to room temperature. c)less sugar dissolves in iced coff..
dilute to mark with water and mix. (You will need the extra volume of this most concentrated solution for further studies.) Record your actual standard concentrations accounting for the dilution as Cstd1, Cstd2, Cstd3, and Cstd4, respectively.
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